Premium
Surface Modification of Carbon Electrode for Electric Double Layer Capacitor
Author(s) -
Tashima Daisuke,
Kurosawatsu Kenji,
Otsubo Masahisa,
Honda Chikahisa
Publication year - 2007
Publication title -
plasma processes and polymers
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 0.644
H-Index - 74
eISSN - 1612-8869
pISSN - 1612-8850
DOI - 10.1002/ppap.200731215
Subject(s) - carbon fibers , electrode , activated carbon , glow discharge , analytical chemistry (journal) , etching (microfabrication) , materials science , nitrogen , plasma etching , layer (electronics) , surface layer , plasma , chemistry , nanotechnology , composite material , composite number , organic chemistry , adsorption , physics , quantum mechanics
In this research, spatio‐temporal profiles of positive and negative charges in an electric double layer capacitor (EDLC) which consists of activated carbon, treated by plasma discharges were measured. The plasma type was a high frequency glow discharge and the sample of activated carbon is set in the center of glow discharge. Optimal conditions for plasma surface treatment of activated carbon was examined from 0 to 60 min at 150 °C in nitrogen gas. As a result, nitrogen atom was doped onto the surface layer of the activated carbon. In addition, electron spectroscopy for chemical analysis (ESCA) spectra of nitrogen in the activated carbon was examined. By etching the surface layer of carbon electrode exposed to the plasma, the doped nitrogen atom penetrated about 3 nm of the surface layer of carbon electrode after 60 min of plasma surface treatment.